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Re: joe, turn it off!

2002-07-14 22:24:12


Randy Bush wrote:
We did (at 9:30am, minutes after the problem was detected). It didn't go away. Now be an engineer and show us a trace.

a bit hard when it is broken arp packets

Jul 15 11:47:27 roam /kernel: arp: unknown hardware address format (0x0800)
Jul 15 11:47:27 roam /kernel: arp: unknown hardware address format (0x0800)
Jul 15 13:01:45 roam /kernel: arp: unknown hardware address format (0x0800)
Jul 15 13:49:08 roam /kernel: arp: unknown hardware address format (0x0800)

That totals 4 packets that are ill-formed in a period of 2 hours, packets which are causing the router to crash. That's a bug, period.

This has nothing to do with what happened this morning - those were incorrect source addresses.

The routers have a bug in their implementation of ARP.

yet to be known

A router that doesn't drop an ill-formed address in an ARP packet has a bug. A router that crashes due to this has a fatal bug.

Let's replace that router, and debug THAT offline.

ARP, and our use of it, isn't experimental.

your use of it was clearly demonstrated to have broken things this
morning.  we're just asking you to turn your stuff off so we can
isolate the problem.

If you had bothered to ask, it isn't even my stuff. It's Lars'. I'm running (still, since this morning, and haven't stopped)- WinXP (gasp).

Joe